A 22.4 liter sample of gas at STP weighs 12.0 grams. What is the molecular weight of the gas?
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32.0 g/mol
16.0 g/mol
12.0 g/mol
29.4 g/mol
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When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

Why does his teacher ask him to balance the equation by including the correct coefficient

What is the percentage of hydrogen in nitrogen trihydride